Early determination of zero-quantized 8 x 8 dct coefficients
文献类型：期刊论文
| 作者 | Ji, Xiangyang2,3; Kwong, Sam4; Zhao, Debin5; Wang, Hanli6; Kuo, C. -C. Jay7,8; Dai, Qionghai1 |
| 刊名 | Ieee transactions on circuits and systems for video technology
 |
| 出版日期 | 2009-12-01 |
| 卷号 | 19期号:12页码:1755-1765 |
| 关键词 | Butterfly-based dct Computational complexity Discrete cosine transform Sum of absolute difference Zero-quantized coefficients |
| ISSN号 | 1051-8215 |
| DOI | 10.1109/tcsvt.2009.2026839 |
| 通讯作者 | Ji, xiangyang(xyji@tsinghua.edu.cn) |
| 英文摘要 | This paper proposes a novel approach to early determination of zero-quantized 8x8 discrete cosine transform (dct) coefficients for fast video encoding. first, with the dynamic range analysis of dct coefficients at different frequency positions, several sufficient conditions are derived to early determine whether a prediction error block (8x8) is an all-zero or a partial-zero block, i.e., the dct coefficients within the block are all or partially zero-quantized. being different from traditional methods that utilize the sum of absolute difference (sad) of the entire prediction error block, the sufficient conditions are derived based on the sad of each row of the prediction error block. for partial-zero blocks, fast dct/idct algorithms are further developed by pruning conventional 8-point butterfly-based dct/idct algorithms. experimental results exhibit that the proposed early determination algorithm greatly reduces computational complexity in terms of dct/idct, quantization, and inverse quantization, as compared with existing algorithms. |
| WOS关键词 | BLOCK MOTION ESTIMATION ; DISCRETE COSINE TRANSFORM ; DIAMOND SEARCH ALGORITHM ; MODEL |
| WOS研究方向 | Engineering |
| WOS类目 | Engineering, Electrical & Electronic |
| 语种 | 英语 |
| WOS记录号 | WOS:000272483100004 |
| 出版者 | IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2400139 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Ji, Xiangyang |
| 作者单位 | 1.Tsinghua Univ, Automat Dept, Broadband Networks & Digital Media Lab, Beijing 100084, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100080, Peoples R China 3.Chinese Acad Sci, Inst Comp Technol, Beijing 100080, Peoples R China 4.City Univ Hong Kong, Dept Comp Sci, Kowloon, Hong Kong, Peoples R China 5.Harbin Inst Technol, Dept Comp Sci, Harbin 150001, Peoples R China 6.Fernuniv, D-58084 Hagen, Germany 7.Univ So Calif, Dept Elect Engn, Los Angeles, CA 90089 USA 8.Univ So Calif, Integrated Media Syst Ctr, Los Angeles, CA 90089 USA |
| 推荐引用方式 GB/T 7714 | Ji, Xiangyang,Kwong, Sam,Zhao, Debin,et al. Early determination of zero-quantized 8 x 8 dct coefficients[J]. Ieee transactions on circuits and systems for video technology,2009,19(12):1755-1765. |
| APA | Ji, Xiangyang,Kwong, Sam,Zhao, Debin,Wang, Hanli,Kuo, C. -C. Jay,&Dai, Qionghai.(2009).Early determination of zero-quantized 8 x 8 dct coefficients.Ieee transactions on circuits and systems for video technology,19(12),1755-1765. |
| MLA | Ji, Xiangyang,et al."Early determination of zero-quantized 8 x 8 dct coefficients".Ieee transactions on circuits and systems for video technology 19.12(2009):1755-1765. |
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来源：中国科学院大学
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